Agilent/Keysight 909E

The Keysight 909E is a precision 75 Ω coaxial termination engineered as a calibration standard for demanding RF and microwave measurement systems. Built on tantalum nitride on sapphire thin-film technology, it delivers exceptional reflection coefficient performance across its operating range while maintaining stable impedance under thermal and mechanical stress.

Technical Specifications

• Impedance: 75 Ω


• Frequency Range: DC to 3 GHz


• Reflection Coefficient: ≤ 0.005 (DC to 2 GHz); ≤ 0.01 (2 GHz to 3 GHz)


• VSWR: ≤ 1.01 SWR (DC to 2 GHz); ≤ 1.02 SWR (2 GHz to 3 GHz)


• Average Power Rating: 0.5 W


• Peak Power Rating: 100 W (10 µS pulse width) Connector & Construction


• Type N interface, available in male or female configurations


• Gold-plated beryllium copper contacts ensure repeatable connections and wear resistance


• Length: 51 mm


• Net Weight: 60 g Environmental & Operational Limits


• Operating Temperature: +15 °C to +35 °C


• Storage Temperature: -55 °C to +75 °C


• Operating Altitude: Up to 15,000 ft


• Storage Altitude: Up to 50,000 ft


• Humidity: Five-day cycling at +40 °C / 95% RH (non-condensing)


• Vibration: 0.015" displacement, 5–55–5 Hz, 15 min per axis (3 axes)


• Shock: 200 g, 3 ms, three impacts per plane


• EMC: Compliant with MIL-STD-461 (RE02), VDE0871, and CISPR 11

Key Features

• Ultra-low reflection coefficient across DC to 3 GHz enables high-accuracy calibration traceback


• Thin-film resistive element eliminates connector-induced discontinuities


• Rated for both continuous (0.5 W average) and pulsed (100 W peak) power handling


• Compact form factor (51 mm length) fits standard 75 Ω test benches


• Mechanical robustness under vibration and shock meets field deployment requirements

Typical Applications

• Network analyzer calibration and system error correction


• Impedance matching verification in 75 Ω distribution systems


• Transmission line characterization and S-parameter measurements


• Frequency-dependent loss and reflection benchmarking

Compatibility & Integration Designed for integration with Keysight/Agilent test and measurement platforms operating in 75 Ω environments. Connector options (male/female Type N) support direct connection to standard RF test ports.